The winter season ended with a rather full tank of gas in my snow blower.

Rather than drain the gas, someone gave me advice to let it run 5 minutes
every month, to avoid problems, which I have been doing.

Today, another friend saw this and said, the gas will "varish" or crystize
in my tank if I don't drain it out, and run it dry.

So it my running it 5 minutes a month adequate to avoid problems? Or do I
really need to drain it and run it dry?

Thanks